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Contents
# Copyright (c) 2015 Ruby-GNOME2 Project Team
# This program is licenced under the same licence as Ruby-GNOME2.
#
=begin
= Overlay/Decorative Overlay
Another example of an overlay with some decorative
and some interactive controls.
=end
module Overlay2Demo
def self.run_demo(_main_window)
window = Gtk::Window.new(:toplevel)
window.set_default_size(500, 510)
window.set_title("Decorative Overlay")
overlay = Gtk::Overlay.new
sw = Gtk::ScrolledWindow.new
sw.set_policy(:automatic, :automatic)
text = Gtk::TextView.new
buffer = text.buffer
buffer.text = "Dear Diary..."
tag = buffer.create_tag("top-margin", "pixels-above-lines" => 0)
word_end = buffer.start_iter
word_end.forward_word_end
buffer.apply_tag(tag, buffer.start_iter, word_end)
window.add(overlay)
overlay.add(sw)
sw.add(text)
image = Gtk::Image.new(:resource => "/overlay2/decor1.png")
overlay.add_overlay(image)
overlay.set_overlay_pass_through(image, true)
image.set_halign(:start)
image.set_valign(:start)
image = Gtk::Image.new(:resource => "/overlay2/decor2.png")
overlay.add_overlay(image)
overlay.set_overlay_pass_through(image, true)
image.set_halign(:end)
image.set_valign(:end)
adjustment = Gtk::Adjustment.new(0, 0, 100, 1, 1, 0)
adjustment.signal_connect "value-changed" do |widget|
value = widget.value
text.set_left_margin(value)
tag.set_property("pixels-above-lines", value)
end
scale = Gtk::Scale.new(:horizontal, adjustment)
scale.set_draw_value(false)
scale.set_size_request(120, -1)
scale.set_margin_start(20)
scale.set_margin_end(20)
scale.set_margin_bottom(20)
overlay.add_overlay(scale)
scale.set_halign(:start)
scale.set_valign(:end)
scale.set_tooltip_text("Margin")
adjustment.value = 100
overlay.show_all
if !window.visible?
window.show_all
else
window.destroy
end
window
end
end
Version data entries
6 entries across 6 versions & 1 rubygems